JP6910240B2 - Volume reduction container - Google Patents

Description

The present invention relates to a volume reduction container.

The mouth, body, and bottom are connected in this order from top to bottom along the axial direction of the container, and as a volume-reducing container integrally formed of a synthetic resin material, for example, in Patent Document 1 below. As shown, a configuration in which a pillar portion is provided on the body portion is known.

Japanese Unexamined Patent Publication No. 2005-888979

However, in the conventional volume-reducing container, there is room for improvement in accurately stabilizing the volume-reducing deformation.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a volume reduction container capable of accurately stabilizing volume reduction deformation.

In order to solve the above problems and achieve such an object, the volume-reducing container of the present invention has a mouth, a body, and a bottom connected in this order from top to bottom along the axial direction of the container. Along with being provided, it is integrally formed of a synthetic resin material, and a plurality of vertical grooves gradually extending from above to one side in the circumferential direction are formed on the body portion at intervals in the circumferential direction. At least the first ridgeline portion, the second ridgeline portion, and the third ridgeline portion in the portion of the body portion located between the flutes adjacent to each other in the circumferential direction when viewed from the outside in the radial direction. A panel portion having a triangular shape or a quadrangular shape formed by the ridge line portion is formed, and the first ridge line portion is the other side vertical groove located on the other side in the circumferential direction among the two vertical grooves adjacent to each other in the circumferential direction. Located at the peripheral edge of the opening of the groove, the second ridge gradually extends upward from the lower end edge of the first ridge toward one side in the circumferential direction, and two vertical portions adjacent to each other in the circumferential direction. Of the grooves, it reaches the opening peripheral edge of the one-sided vertical groove located on one side in the circumferential direction, and the third ridge line portion gradually decreases downward from the upper end edge of the first ridge line portion toward one side in the circumferential direction. It is characterized in that it extends toward the surface and reaches the opening peripheral edge of the one-sided vertical groove.

According to the present invention, a vertical groove and a panel portion are formed in the body portion, and the second ridge line portion and the third ridge line portion in the panel portion are inclined with respect to both the container axial direction and the circumferential direction. Therefore, when the internal pressure of the volume-reducing container decreases, the deformation of the body portion starts from the narrowing of the groove width of the vertical groove, and the panel portion and the outside of the body portion located outside the panel portion in the container axial direction. The parts proceed in this order, and the body can be smoothly and accurately twisted and deformed in the circumferential direction.
That is, when the groove width of the vertical groove is narrowed when the internal pressure of the volume reduction container is lowered, a tensile force in the circumferential direction is applied to the panel portion to which a force is applied inward in the radial direction, as described above. The inclined second ridge line portion and third ridge line portion are likely to be bent and deformed inward in the radial direction.

Here, when the panel portion is viewed from the outside in the radial direction, the inclination angle of the third ridge line portion with respect to the container axis may be larger than the inclination angle of the second ridge line portion with respect to the container axis.

In this case, in the front view of the panel portion, the inclination angle of the third ridge line portion with respect to the container axis is larger than the inclination angle of the second ridge line portion with respect to the container axis. It becomes possible to apply a large load to the third ridgeline portion, and the third ridgeline portion can be smoothly bent and deformed.

Further, the upper end portion of the vertical groove may be located at the upper end portion of the body portion.
In this case, since the upper end of the vertical groove is located at the upper end of the body, it is possible to generate a tensile force in the circumferential direction at the upper end of the body when the internal pressure of the volume reduction container decreases. , The bending deformation of the third ridge line portion can be reliably propagated to the upper end portion of the body portion.

Further, the panel portion may gradually extend inward in the radial direction from the outside in the container axial direction toward the inside.
In this case, since the panel portion gradually extends inward in the radial direction from the outside in the container axial direction toward the inside, the panel portion is directed inward in the radial direction when the internal pressure of the volume-reducing container decreases. It becomes easy to deform, and the panel portion can be reliably deformed to the extent that the deformation propagates from the panel portion to the outer portion.

According to the present invention, the volume reduction deformation can be stabilized with high accuracy.

It is a volume-reducing container shown as one embodiment according to the present invention, and is a side view of a panel portion viewed from the front. FIG. 1 is a side view of the volume reduction container shown in FIG. 1 with a vertical groove viewed from the front. It is a top view of the volume reduction container shown in FIG. 1A is a cross-sectional view taken along the line AA, and FIG. 1B is a cross-sectional view taken along the line BB. 1A is a cross-sectional view taken along the line CC and FIG. 1B is a cross-sectional view taken along the line DD. 1A is a cross-sectional view taken along the line EE, (b) is a cross-sectional view taken along the line FF, and (c) is a cross-sectional view taken along the line GG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The volume-reducing container 1 according to the present embodiment is formed by, for example, blow molding, and as shown in FIGS. 1 and 2, the mouth portion 11, the body portion 13 and the bottom portion 14 are upward along the container axis O direction. It is connected in this order from the bottom to the bottom, and is integrally formed of a synthetic resin material. The mouth portion 11 and the body portion 13 are each formed in a cylindrical shape. The bottom portion 14 is formed in a plate shape and closes the lower end opening of the body portion 13. In the illustrated example, the portion of the bottom portion 14 located on the inner side in the radial direction from the outer peripheral edge portion serving as the ground contact portion is depressed upward. The mouth portion 11, the body portion 13, and the bottom portion 14 are arranged coaxially with the container shaft O.
Hereinafter, in a plan view seen from the container axis O direction, the direction intersecting the container axis O is referred to as a radial direction, and the direction orbiting around the container axis O is referred to as a circumferential direction.

The content of the volume reduction container 1 is, for example, 200 ml or more and 1500 ml or less. In the illustrated example, the content of the volume reduction container 1 is about 400 ml, the size of the volume reduction container 1 in the container axis O direction is about 180 mm, and the maximum outer diameter of the body portion 13 is about 66 mm. .. The wall thickness of the intermediate portion of the body portion 13, which will be described later, is 0.15 mm or more and 0.35 mm or less.
In the illustrated example, the volume reduction container 1 is arranged inside an outer container (not shown), and a discharger such as a pump for discharging the contents is attached to the mouth portion 11 to reduce the contents. The volume is reduced and deformed accordingly.

On the outer peripheral surface of the mouth portion 11, a male screw portion to which a cap (not shown) is detachably screwed is formed.
The diameter of the upper end portion 12 of the body portion 13 is gradually increased from the upper side to the lower side. A plurality of lateral ribs 12a projecting outward in the radial direction and extending in the circumferential direction are formed on the upper end portion 12 of the body portion 13 at intervals in the circumferential direction. As shown in FIGS. 1 to 3, three lateral ribs 12a are arranged at equal intervals in the circumferential direction. The lateral rib 12a gradually extends upward from the outside to the inside in the circumferential direction. The upper surface of the lateral rib 12a is formed in a curved surface shape that protrudes upward. The upper surface of the lateral rib 12a is located below the mouth portion 11. The lateral ribs 12a adjacent to each other in the circumferential direction are close to each other in the circumferential direction, and the interval thereof is shorter than the length of the lateral ribs 12a in the circumferential direction.
The lower end of the body portion 13 is gradually reduced in diameter from the upper side to the lower side.

A plurality of vertical grooves 15 extending in the circumferential direction gradually toward one side in the circumferential direction are formed in the body portion 13 at intervals in the circumferential direction. The vertical groove 15 is curved so as to exhibit a curved shape of a protrusion toward the other side in the circumferential direction when viewed from the outside in the radial direction. Three vertical grooves 15 are arranged at equal intervals in the circumferential direction. The number of vertical grooves 15 and the like may be changed as appropriate. The upper end of the flute 15 is located at the upper end 12 of the body 13, and the lower end of the flute 15 is located at the lower end of the body 13. The upper end edge of the vertical groove 15 is arranged at a portion of the upper end portion 12 of the body portion 13 located between the lateral ribs 12a adjacent to each other in the circumferential direction. The upper end edge and the lower end edge of the flute 15 have a sharp shape that is pointed toward the outside in the container axis O direction when viewed from the outside in the radial direction.

The flutes 15 form a radial inner end portion of each of the one side side surface 16 facing the other side in the circumferential direction, the other side side surface 17 facing one side in the circumferential direction, and the one side side surface 16 and the other side side surface 17. A groove bottom surface 18 for connecting is provided. The groove bottom surface 18 is formed in a curved surface shape that is recessed inward in the radial direction.

In a cross-sectional view orthogonal to the container axis O as shown in FIGS. 4 and 5, the inclination angle θ1 of the one side surface 16 with respect to the straight line L connecting the container axis O and the groove bottom surface 18 is the other side surface 17 It is larger than the inclination angle θ2 with respect to the straight line L. The inclination angle θ2 is, for example, 30% or more and 60% or less of the inclination angle θ1. In the cross-sectional view, the length of the one side surface 16 is longer than the length of the other side side surface 17. In the cross-sectional view, the length of the other side surface 17 is 15% or more and 40% or less of the length of the one side side surface 16. The outer peripheral ends 15a and 15b of the vertical groove 15 in the volume reduction container 1 are connected to the outer end portions in the radial direction on the one side side surface 16 and the other side side surface 17, respectively. The opening peripheral edges 15a and 15b of the vertical groove 15 in the volume reduction container 1 are formed in a curved surface shape that protrudes outward in the radial direction.
The inclination angle θ1 of the one side surface 16 with respect to the straight line L may be set to be equal to or less than the inclination angle θ2 of the other side surface 17 with respect to the straight line L in the cross-sectional view. The length of 16 may be less than or equal to the length of the other side surface 17.

As shown in FIG. 1, in the body portion 13, at least the first ridge line portion 21 in the portion located between the vertical grooves 15 adjacent to each other in the circumferential direction when viewed from the outside in the radial direction, A panel portion 19 having a triangular shape or a quadrangular shape, which is partitioned by the second ridge line portion 22 and the third ridge line portion 23, is formed.

The first ridge line portion 21 is located at the opening peripheral edge portion 15a of the other side vertical groove 15 located on the other side in the circumferential direction among the two vertical grooves 15 adjacent to each other in the circumferential direction. The first ridge line portion 21 is located over the entire length in the container axis O direction in the intermediate portion of the body portion 13 located between the upper end portion 12 and the lower end portion.
The second ridge line portion 22 gradually extends upward from the lower end edge of the first ridge line portion 21 toward one side in the circumferential direction, and one of the two vertical grooves 15 adjacent to each other in the circumferential direction in the circumferential direction. It reaches the opening peripheral edge portion 15b of the one-side vertical groove 15 located on the side.

The third ridge line portion 23 gradually extends downward from the upper end edge of the first ridge line portion 21 toward one side in the circumferential direction, and reaches the opening peripheral edge portion 15b of the one-side vertical groove 15. In the illustrated example, the lower end of the third ridge 23 is located above the upper end of the second ridge 22. As a result, the panel portion 19 has a quadrangular shape when viewed from the outside in the radial direction. Specifically, the panel portion 19 exhibits a lateral trapezoidal shape in which the upper bottom is located on one side in the circumferential direction and the lower bottom is located on the other side in the circumferential direction in the front view. In the front view of the panel portion 19, the inclination angle θ3 of the third ridge line portion 23 with respect to the container shaft O is larger than the inclination angle θ4 of the second ridge line portion 22 with respect to the container shaft O. The length of the third ridge line portion 23 is shorter than the length of the second ridge line portion 22. The length of the third ridge line portion 23 is 50% or more and 90% or less of the length of the second ridge line portion 22.

The lower end of the third ridge 23 and the upper end of the second ridge 22 may coincide with each other. In the front view, the inclination angle θ3 of the third ridge line portion 23 with respect to the container axis O may be set to be equal to or less than the inclination angle θ4 of the second ridge line portion 22 with respect to the container axis O, and in the front view, the third ridge line portion 23 may be set. May be greater than or equal to the length of the second ridge line portion 22.

As shown in FIGS. 4 and 5, in the cross-sectional view, the radius of curvature of the opening peripheral edge portion 15b of the one-side vertical groove 15 is equal to the radius of curvature of the opening peripheral edge portion 15a of the other-side vertical groove 15. It is larger than the radius of curvature of the groove bottom surface 18. Of the opening peripheral edge portion 15b of the one-side vertical groove 15, the portion of the body portion 13 located at the intermediate portion extends substantially straight in the container axis O direction. Of the opening peripheral edge portion 15a of the other side vertical groove 15, the portion of the body portion 13 located at the intermediate portion gradually extends from the outside in the container axis O direction toward the inside and gradually extends inward in the radial direction. It exhibits a curved shape that is recessed inward in the radial direction in a vertical cross-sectional view along the container axis O.

In the cross-sectional view, the radius of curvature of the opening peripheral edge portion 15b of the one-side vertical groove 15 is made different from the radius of curvature of the opening peripheral edge portion 15a of the other-side vertical groove 15, and is set to be equal to or less than the radius of curvature of the groove bottom surface 18. May be good. Of the opening peripheral edge portion 15b of the one-side vertical groove 15, the portion located in the intermediate portion of the body portion 13 may be gradually extended inward in the radial direction from the outside in the container axis O direction toward the inside. good. Of the opening peripheral edge portion 15a of the other side vertical groove 15, the portion located in the intermediate portion of the body portion 13 is positioned at the same radial position over the entire area in the container shaft O direction, and is located in the container shaft O direction. You may extend it almost straight.

The panel portion 19 is formed in a curved surface shape that protrudes outward in the radial direction in the cross-sectional view, and the radius of curvature of the panel portion 19 is the largest at the same position in the volume reduction container 1 in the container axis O direction. It has become. At the same position in the volume reduction container 1 in the O direction of the container axis, of the both ends in the circumferential direction of the panel portion 19, the other end connected to the opening peripheral edge 15a of the other side vertical groove 15 is the one side. It is located radially inside the opening peripheral edge portion 15b of the vertical groove 15, the second ridge line portion 22, or the one-sided end connected to the third ridge line portion 23. Specifically, in the cross-sectional view taken along the line BB of FIG. 1, as shown in FIG. 4B, the other end of the panel 19 is the opening peripheral edge of the one-side vertical groove 15. It is located inward in the radial direction from the one-sided end connected to the portion 15b. In the cross-sectional view taken along the line CC of FIG. 1 and the cross-sectional view taken along the line DD of FIG. 1 as shown in FIGS. 5 (a) and 5 (b), the other side of the panel portion 19 The side end is located inward in the radial direction with respect to the one end connected to the second ridge 22.

As shown in FIG. 6, the panel portion 19 gradually extends inward in the radial direction from the outside in the container axis O direction toward the inside. In the illustrated example, the panel portion 19 gradually extends inward in the radial direction from the outside in the container axis O direction toward the inside over the entire circumferential direction. The panel portion 19 exhibits a curved shape that is recessed inward in the radial direction in a vertical cross-sectional view along the container axis O.

As described above, according to the volume reduction container 1 according to the present embodiment, the vertical groove 15 and the panel portion 19 are formed in the body portion 13, and the second ridge line portion 22 and the third ridge line portion 23 in the panel portion 19 are formed. However, since the container axis is inclined in both the O direction and the circumferential direction, when the internal pressure of the volume reduction container 1 decreases, the deformation of the body portion 13 starts from the narrowing of the groove width of the vertical groove 15. Then, the panel portion 19 and the body portion 13 proceed in this order to the outer portion located outside the panel portion 19 in the container axis O direction, and the body portion 13 is smoothly and accurately twisted and deformed in the circumferential direction. be able to.
That is, when the groove width of the vertical groove 15 is narrowed when the internal pressure of the volume reducing container 1 is lowered, a tensile force in the circumferential direction is applied to the panel portion 19 to which a force is applied inward in the radial direction. The second ridge line portion 22 and the third ridge line portion 23, which are inclined as described above, are likely to be bent and deformed inward in the radial direction.

Further, in the front view of the panel portion 19, the inclination angle θ3 of the third ridge line portion 23 with respect to the container shaft O is larger than the inclination angle θ4 of the second ridge line portion 22 with respect to the container shaft O, so that the internal pressure of the volume reducing container 1 is increased. When lowered, a large load can be applied to the third ridge line portion 23, and the third ridge line portion 23 can be smoothly bent and deformed.
Further, since the upper end portion of the vertical groove 15 is located at the upper end portion 12 of the body portion 13, when the internal pressure of the volume reducing container 1 decreases, a tensile force in the circumferential direction is also generated at the upper end portion 12 of the body portion 13. This makes it possible to reliably propagate the bending deformation of the third ridge line portion 23 to the upper end portion 12 of the body portion 13.
Further, since the panel portion 19 gradually extends inward in the radial direction from the outside in the container axis O direction toward the inside, the panel portion 19 is moved inward in the radial direction when the internal pressure of the volume reducing container 1 decreases. The panel portion 19 can be reliably deformed to the extent that the deformation propagates from the panel portion 19 to the outer portion.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above embodiment, as the vertical groove 15, the upper end portion is located at the upper end portion 12 of the body portion 13 and the lower end portion is located at the lower end portion of the body portion 13, but the upper end portion of the body portion 13 is shown. A configuration may be adopted in which the configuration is arranged only in the intermediate portion located between the portion 12 and the lower end portion.
Further, the panel portion 19 is shown to have a configuration in which the panel portion 19 gradually extends inward in the radial direction from the outside toward the inside in the container axis O direction. A configuration that is located at a position in the radial direction and extends substantially straight in the container axis O direction may be adopted.
Further, the volume reduction container 1 may be used, for example, in a manner in which the shape is maintained without being reduced in volume and deformed as the contents are reduced. Even in this case, after the contents are used up, the volume reduction container 1 can be made compact and discarded.

Further, the synthetic resin material forming the volume-reducing container 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
Further, the volume reduction container 1 is not limited to the single-layer structure, and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, a layer made of a resin material having an oxygen absorption property, a combination of these layers, a vapor deposition layer and the like.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

1 Volume reduction container 11 Mouth 12 Upper end of body 13 Body 14 Bottom 15 Vertical groove 15a Opening peripheral edge of other vertical groove 15b Opening peripheral edge of one vertical groove 19 Panel 21 1st ridge 22 2nd Ridge 23 3rd ridge θ3 3rd ridge tilt angle θ4 2nd ridge tilt angle O Container shaft

Claims (4)

The mouth, body, and bottom are connected in this order from top to bottom along the axial direction of the container, and are integrally formed of a synthetic resin material.
A plurality of vertical grooves extending toward one side in the circumferential direction are gradually formed in the body portion from the upper side to the lower side at intervals in the circumferential direction.
At least the first ridge line portion, the second ridge line portion, and the third ridge line portion in the portion of the body portion located between the vertical grooves adjacent to each other in the circumferential direction when viewed from the outside in the radial direction. A panel portion having a triangular or square shape divided by is formed.
The first ridge line portion is located at the opening peripheral edge portion of the other side vertical groove located on the other side in the circumferential direction among the two vertical grooves adjacent to each other in the circumferential direction.
The second ridge line portion gradually extends upward from the lower end edge of the first ridge line portion toward one side in the circumferential direction, and one of the two longitudinal grooves adjacent to each other in the circumferential direction in the circumferential direction. Reaching the opening peripheral edge of the one-sided vertical groove located in
The third ridge line portion gradually extends downward from the upper end edge of the first ridge line portion toward one side in the circumferential direction, and reaches the opening peripheral edge portion of the one-side vertical groove. Container. The first aspect of the present invention is that the inclination angle of the third ridge line portion with respect to the container axis is larger than the inclination angle of the second ridge line portion with respect to the container axis when the panel portion is viewed from the outside in the radial direction. Described volume reduction container. The volume-reducing container according to claim 1 or 2, wherein the upper end portion of the vertical groove is located at the upper end portion of the body portion. The volume-reducing container according to any one of claims 1 to 3, wherein the panel portion gradually extends inward in the radial direction from the outside to the inside in the container axial direction.

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